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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#641417 | #5069. Vacation | Rikku_eq | WA | 1608ms | 52008kb | C++14 | 8.8kb | 2024-10-14 20:26:01 | 2024-10-14 20:26:05 |
Judging History
answer
#include <bits/stdc++.h>
#define N 200005
#define INF 1000000000000000000
#define ls(u) tr[u].ls
#define rs(u) tr[u].rs
using namespace std;
typedef long long ll;
int n, m, C, rec[N*2];
int bid[N], st[N];
ll _f[N*2], _g[N*2];
struct SegT1
{
struct Seg { int ls, rs; ll f, g, sum, tgf, tgg; ll seq, lseq, rseq, aseq; } tr[N*2];
int rt, tot;
struct RET { ll f, g, sum; };
struct RET2 { ll seq, lseq, rseq, aseq; };
void pushdown (int u)
{
ll valf=tr[u].tgf, valg=tr[u].tgg;
tr[ls(u)].f+=valf; tr[ls(u)].tgf+=valf; tr[ls(u)].sum+=valf;
tr[rs(u)].f+=valf; tr[rs(u)].tgf+=valf; tr[rs(u)].sum+=valf;
tr[ls(u)].g+=valg; tr[ls(u)].tgg+=valg; tr[ls(u)].sum+=valg;
tr[rs(u)].g+=valg; tr[rs(u)].tgg+=valg; tr[rs(u)].sum+=valg;
tr[u].tgf=0; tr[u].tgg=0;
}
void merge (int u)
{
tr[u].f=max(tr[ls(u)].f, tr[rs(u)].f);
tr[u].g=max(tr[ls(u)].g, tr[rs(u)].g);
tr[u].sum=max(tr[ls(u)].f+tr[rs(u)].g, max(tr[ls(u)].sum, tr[rs(u)].sum));
}
void build (int &u, int l, int r)
{
tr[u]=(Seg){ ls(u), rs(u), -INF, -INF, -INF, 0, 0, -INF, -INF, -INF, 0 };
if (!u) { u=++tot; }
if (l==r) {
tr[u].f=_f[l+C]; tr[u].g=_g[l]; tr[u].sum=-INF;
tr[u].seq=rec[l];
tr[u].lseq=rec[l];
tr[u].rseq=rec[l];
tr[u].aseq=rec[l];
return;
}
int md=(l+r)>>1;
build(ls(u), l, md);
build(rs(u), md+1, r);
merge(u);
tr[u].seq=max(tr[ls(u)].rseq+tr[rs(u)].lseq, max(tr[ls(u)].seq, tr[rs(u)].seq));
tr[u].lseq=max(tr[ls(u)].lseq, tr[ls(u)].aseq+tr[rs(u)].lseq);
tr[u].rseq=max(tr[rs(u)].rseq, tr[rs(u)].aseq+tr[ls(u)].rseq);
tr[u].aseq=tr[ls(u)].aseq+tr[rs(u)].aseq;
}
void add_g (int u, int l, int r, int ql, int qr, ll num)
{
if (ql>r || qr<l) { return; }
if (ql<=l && r<=qr) { tr[u].g+=num; tr[u].tgg+=num; tr[u].sum+=num; return; }
pushdown(u);
int md=(l+r)>>1;
add_g(ls(u), l, md, ql, qr, num);
add_g(rs(u), md+1, r, ql, qr, num);
merge(u);
}
void add_f (int u, int l, int r, int ql, int qr, ll num)
{
if (ql>r || qr<l) { return; }
if (ql<=l && r<=qr) { tr[u].f+=num; tr[u].tgf+=num; tr[u].sum+=num; return; }
pushdown(u);
int md=(l+r)>>1;
add_f(ls(u), l, md, ql, qr, num);
add_f(rs(u), md+1, r, ql, qr, num);
merge(u);
}
RET qry (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return (RET){ -INF, -INF, -INF }; }
if (ql<=l && r<=qr) { return (RET){ tr[u].f, tr[u].g, tr[u].sum }; }
pushdown(u);
int md=(l+r)>>1;
RET resl=qry(ls(u), l, md, ql, qr);
RET resr=qry(rs(u), md+1, r, ql, qr);
return (RET){ max(resl.f, resr.f), max(resl.g, resr.g), max(resl.f+resr.g, max(resl.sum, resr.sum)) };
}
void upd_seq (int u, int l, int r, int id, ll num)
{
if (l==r) { tr[u].seq=tr[u].lseq=tr[u].rseq=tr[u].aseq=num; return; }
int md=(l+r)>>1;
if (id<=md) { upd_seq(ls(u), l, md, id, num); }
else { upd_seq(rs(u), md+1, r, id, num); }
tr[u].seq=max(tr[ls(u)].rseq+tr[rs(u)].lseq, max(tr[ls(u)].seq, tr[rs(u)].seq));
tr[u].lseq=max(tr[ls(u)].lseq, tr[ls(u)].aseq+tr[rs(u)].lseq);
tr[u].rseq=max(tr[rs(u)].rseq, tr[rs(u)].aseq+tr[ls(u)].rseq);
tr[u].aseq=tr[ls(u)].aseq+tr[rs(u)].aseq;
}
RET2 qry_seq (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return (RET2){ -INF, -INF, -INF, 0 }; }
if (ql<=l && r<=qr) { return (RET2){ tr[u].seq, tr[u].lseq, tr[u].rseq, tr[u].aseq }; }
int md=(l+r)>>1;
RET2 resl=qry_seq(ls(u), l, md, ql, qr);
RET2 resr=qry_seq(rs(u), md+1, r, ql, qr);
RET2 res;
res.seq=max(resl.rseq+resr.lseq, max(resl.seq, resr.seq));
res.lseq=max(resl.lseq, resl.aseq+resr.lseq);
res.rseq=max(resr.rseq, resr.aseq+resl.rseq);
res.aseq=resl.aseq+resr.aseq;
return res;
}
} ST1;
struct SegT2
{
struct Seg { int ls, rs; ll seq, sum; } tr[N*2];
int rt, tot;
void build (int &u, int l, int r)
{
if (!u) { u=++tot; }
if (l==r) {
tr[u].seq=ST1.qry_seq(ST1.rt, 1, n, st[bid[l]], st[bid[l]+1]-1).seq;
tr[u].sum=ST1.qry(ST1.rt, 1, n, st[bid[l]], st[bid[l]+1]-1).sum;
return;
}
int md=(l+r)>>1;
build(ls(u), l, md); build(rs(u), md+1, r);
tr[u].seq=max(tr[ls(u)].seq, tr[rs(u)].seq);
tr[u].sum=max(tr[ls(u)].sum, tr[rs(u)].sum);
}
void upd (int u, int l, int r, int id, ll sum, ll seq)
{
if (l==r) { tr[u].sum=sum; tr[u].seq=seq; return; }
int md=(l+r)>>1;
if (id<=md) { upd(ls(u), l, md, id, sum, seq); }
else { upd(rs(u), md+1, r, id, sum, seq); }
tr[u].seq=max(tr[ls(u)].seq, tr[rs(u)].seq);
tr[u].sum=max(tr[ls(u)].sum, tr[rs(u)].sum);
}
ll qry_seq (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return -INF; }
if (ql<=l && r<=qr) { return tr[u].seq; }
int md=(l+r)>>1;
return max(qry_seq(ls(u), l, md, ql, qr), qry_seq(rs(u), md+1, r, ql, qr));
}
ll qry_sum (int u, int l, int r, int ql, int qr)
{
if (ql>r || qr<l) { return -INF; }
if (ql<=l && r<=qr) { return tr[u].sum; }
int md=(l+r)>>1;
return max(qry_sum(ls(u), l, md, ql, qr), qry_sum(rs(u), md+1, r, ql, qr));
}
void uupd (int pos, ll sum, ll seq)
{
upd(rt, 1, bid[n], pos, sum, seq);
}
} ST2;
void uupd (int pos, int num)
{
ll ad=num-rec[pos];
ST1.add_g(ST1.rt, 1, n, st[bid[pos]], pos, ad);
if (bid[pos]>1) { ST1.add_f(ST1.rt, 1, n, pos-C, st[bid[pos]]-1, ad); }
ST1.upd_seq(ST1.rt, 1, n, pos, num);
rec[pos]=num;
int x=bid[pos];
ST2.uupd(x, ST1.qry(ST1.rt, 1, n, st[x], st[x+1]-1).sum, ST1.qry_seq(ST1.rt, 1, n, st[x], st[x+1]-1).seq);
x=bid[pos]-1;
if (x>=1) { ST2.uupd(x, ST1.qry(ST1.rt, 1, n, st[x], st[x+1]-1).sum, ST1.qry_seq(ST1.rt, 1, n, st[x], st[x+1]-1).seq); }
}
int main ()
{
// freopen("0test.in", "r", stdin);
// freopen("0test.out", "w", stdout);
scanf("%d %d %d", &n, &m, &C);
for (int i=1; i<=n; i++) { scanf("%d", &rec[i]); }
for (int i=1; i<=n; i++) {
bid[i]=((i-1)/C)+1;
if (!st[bid[i]]) { st[bid[i]]=i; }
} st[bid[n]+1]=n+1;
for (int i=1; i<=n; i++) {
_f[i]=(i!=st[bid[i]])*_f[i-1]+rec[i];
}
for (int i=n; i>=1; i--) {
_g[i]=(i!=st[bid[i]+1]-1)*_g[i+1]+rec[i];
}
ST1.build(ST1.rt, 1, n);
ST2.build(ST2.rt, 1, bid[n]);
// for (int i=1; i<=n; i++) {
// cout<<ST1.qry(ST1.rt, 1, n, i, i).sum<<" ";
// }
// cout<<endl;
// for (int i=1; i<=bid[n]; i++) {
// // cout<<ST1.qry(ST1.rt, 1, n, st[i], st[i+1]-1).sum<<" ";
// // cout<<ST1.qry_seq(ST1.rt, 1, n, st[i], st[i+1]-1).seq<<endl;
// cout<<ST2.qry_seq(ST2.rt, 1, n, i, i)<<" ";
// }
// cout<<endl;
for (int t=1; t<=m; t++) {
int op; scanf("%d", &op);
if (op==1) {
int x, y; scanf("%d %d", &x, &y); uupd(x, y);
}
else {
int l, r; scanf("%d %d", &l, &r);
ll ans=0;
if (r-l+1<=C) {
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, r).seq);
}
else if (bid[l]==bid[r]-1) {
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, l+C-1).seq);
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, r-C+1, r).seq);
ans=max(ans, ST1.qry(ST1.rt, 1, n, l, r-C).sum);
}
else {
ans=max(ans, ST2.qry_seq(ST2.rt, 1, bid[n], bid[l]+1, bid[r]-1));
if (bid[l]+1<=bid[r]-1) {
ans=max(ans, ST2.qry_sum(ST2.rt, 1, bid[n], bid[l]+1, bid[r]-2));
}
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, l, l+C-1).seq);
ans=max(ans, ST1.qry_seq(ST1.rt, 1, n, r-C+1, r).seq);
ans=max(ans, ST1.qry(ST1.rt, 1, n, st[bid[r]-1], r-C).sum);
ans=max(ans, ST1.qry(ST1.rt, 1, n, l, st[bid[l]+1]-1).sum);
}
printf("%lld\n", ans);
}
// cout<<"t: "<<t<<endl;
// for (int i=1; i<=bid[n]; i++) {
// // cout<<ST1.qry(ST1.rt, 1, n, st[i], st[i+1]-1).sum<<" ";
// // cout<<ST1.qry_seq(ST1.rt, 1, n, st[i], st[i+1]-1).seq<<endl;
// cout<<ST2.qry_seq(ST2.rt, 1, n, i, i)<<" ";
// }
// cout<<endl;
// else {
// int l, r; scanf("%d %d", &l, &r);
// }
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 9996kb
input:
5 6 3 0 -5 -3 8 -3 2 3 5 1 2 5 2 1 5 1 4 -3 2 3 5 2 1 5
output:
8 10 0 5
result:
ok 4 number(s): "8 10 0 5"
Test #2:
score: 0
Accepted
time: 1608ms
memory: 52008kb
input:
200000 500000 1 387060158 961744470 37167782 737122872 -532977662 1604246 -30977399 871848791 444997246 454204578 -813187501 -660394286 448014171 -835115276 -631880452 887715308 258530352 805589560 -414653327 -156732249 -335096199 -80266237 367896009 738406627 -903652056 446120866 415658444 -1347916...
output:
999902477 999981999 999343404 999847372 999957587 998160312 999981999 999981999 999981999 999980061 999981999 999981999 999981999 999876122 999981999 999996602 999981999 999981999 999981999 999723649 999981999 999957587 999896087 999981999 999981999 999981999 999981999 999981999 999957587 999981999 ...
result:
ok 250051 numbers
Test #3:
score: -100
Wrong Answer
time: 1492ms
memory: 45988kb
input:
200000 500000 5 802774074 383481934 -295470374 285359286 751657057 197444479 626916547 -828168464 288373833 -493446966 -208422769 956745384 919286225 959643271 -176531848 -380256966 357111771 -50890039 -637284768 -337010918 259019684 752475630 -259898780 98620995 -704832505 -532710796 -971600790 -84...
output:
4385851999 3603813043 4443416295 2551102342 4385851999 4443416295 4158941637 4443416295 4443416295 4443416295 4158941637 4385851999 4076135179 4443416295 4443416295 4443416295 4443416295 4443416295 4443416295 4158941637 4076135179 4443416295 4158941637 4323325838 4443416295 4158941637 4443416295 378...
result:
wrong answer 1st numbers differ - expected: '4544135313', found: '4385851999'